What are 3 types of fossil fuels

Answers

Answer 1

Answer: The three types of fossil fuels are coal, oil, and natural gas. Coal is formed through decay of land vegetation, and is considered a solid fossil fuel. Oil is formed through the remains of marine microorganisms that are deposited on the sea floor and is known as a liquid fossil fuel. Lastly, natural gas is also formed through the remains of marine microorganisms, however, this is the gas version of a fossil fuel.

Answer 2

Answer: -- Solid . . . like coal

-- Liquid . . . like oil

-- Gas . . . like natural gas

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A sinusoidal wave travels along a string. The time for a particular point to move from maximum displacement to zero is 0.13 s. What are the (a) period and (b) frequency? (c) The wavelength is 1.9 m; what is the wave speed?

Answers

Answer:

Part a)

T = 0.52 s

Part b)

$f = 1.92 Hz$

Part c)

$speed = 3.65 m/s$

Explanation:

As we know that the particle move from its maximum displacement to its mean position in t = 0.13 s

so total time period of the particle is given as

$T = 4* 0.13 = 0.52 s$

now we have

Part a)

T = time to complete one oscillation

so here it will move to and fro for one complete oscillation

so T = 0.52 s

Part b)

As we know that frequency and time period related to each other as

$f = (1)/(T)$

$f = (1)/(0.52)$

$f = 1.92 Hz$

Part c)

As we know that

wavelength = 1.9 m

frequency = 1.92 Hz

so wave speed is given as

$speed = wavelength * frequency$

$speed = 1.92 * 1.9$

$speed = 3.65 m/s$

Which unit of measurement is included in the International System of Unit! (si)?

Answers

Answer:

See the explanation below

Explanation:

There are several measures for the international system of measures. Let's name some and their representation symbol.

meter = [m]

time = [s] = seconds

mass = [kg] = kilograms

Temperature = [°C] = celcius degrees

Power = [W] = watts.

Force = [N] = Newtons

What is the speed of a wave with a wavelength of 5 m and a frequency of 6.0 Hz

Answers

The speed of the wave is 30 m/s

Gazala makes the device shown in the diagram and uses it to pick up four paper clips on the point of the nail.What change would enable Gazala to pick up eight paper clips?

A) reversing the battery
B) reversing the nail and using the nail’s head
C) wrapping the wire around the nail more times
D) unwrapping several loops of the wire from the nail

Answers

Answer:

The correct answer is C.

Explanation:

To pick up four clips at the tip of the nail, wrap the wire around the nail more times than it already has. This is because the attraction force of the electromagnet is directly proportional to the square of the magnetic field that is generated by passing a current through the coiled wire. The magnetic field, in turn, is proportional to the number of turns that this wire has around the magnetic element, so it is necessary to increase the number of turns so that the strength of the electromagnet is greater.

Have a nice day!

C) wrapping the wire around the nail more times would enable Gazala to pick up eight more clips

SPEAR is a storage ring at the Stanford Linear Accelerator which has a circulating beam of electrons that are moving at nearly the speed of light (2.998 108 m/s). If a similar ring is about 92.0 m in diameter and has a 0.40 A beam, how many electrons are in the beam

Answers

Answer:

$2.4* 10^(12)$

Explanation:

We are given that

Speed of light,v= $2.998* 10^8 m/s$

Diameter of ring,d=92 m

Radius,r= $(d)/(2)=(92)/(2)=46 m$

Current, I=0.40 A

We have to find the number of electrons in the beam.

We know that

Current,I= $(q)/(t)$

Where q= ne

$e=1.6* 10^(-19) C$

Using the formula

$0.40=(1.6* 10^(-19)n)/((2\pi r)/(v))$

$0.40=(1.6* 10^(-19)n* v)/(2\pi r)$

$0.40=(1.6* 10^(-19)n* 2.998* 10^8)/(2\pi* 46)$

$n=(0.40* 2\pi* 46)/(1.6* 10^(-19)* 2.998* 10^8)=2.4* 10^(12)$

Water behind a dam has a certain amount of stored energy that can be released as the water falls over the top of the dam. It may be enough energy to turn a mill wheel or an electricity-generating turbine. Choose the term that best describes the type of energy stored in the water at the top of the dam. potential energy
kinetic energy
mechanical energy

Answers

Answer:

The answer is potential energy

Explanation:

The potential energy is the energy possessed by a body by virtue of it position

For example the water at the top of the dam is being held at a height h above the bottom of the dam

Then the potential energy

PE= weight of the water* the height

PE= m*g*h

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